Electronic Components Datasheet Search |
|
74LV423N Datasheet(PDF) 10 Page - NXP Semiconductors |
|
74LV423N Datasheet(HTML) 10 Page - NXP Semiconductors |
10 / 16 page Philips Semiconductors Preliminary specification 74LV423 Dual retriggerable monostable multivibrator with reset 1997 Feb 04 10 0.8 0.4 0 02 4 VCC (V) ‘K’ factor SV00185 1 3 6 5 Figure 5. HCT typical “k” factor as a function of VCC; CX = 10 nF; RX = 10 kW to 100 kW. 0 1102 SV00141 10 103 104 102 103 104 105 106 tW ns CEXT (pF) REXT = 100k W 50k W 10k W 2k W Figure 6. Typical output pulse width as a function of the external capacitor values at VCC = 3.3V and Tamb = 25°C. APPLICATION INFORMATION Power-up considerations When the monostable is powered-up it may produce an output pulse, with a pulse width defined by the values of RX and CX, this output pulse can be eliminated using the circuit shown in Figure 7. SV00166 RX VCC A B CX Q Q RESET VCC nCEXT nREXT/CEXT “423” Figure 7. Power-up output pulse elimination circuit Power-down considerations A large capacitor (CX) may cause problems when powering-down the monostable due to the energy stored in this capacitor. When a system containing this device is power-down or a rapid decrease of VCC to zero occurs, the monostable may sustain damage, due to the capacitor discharging through the input protection diodes. To avoid this possibility, use a damping diode (DX) preferably a germanium or Schottky type diode able to withstand large current surges and connect as shown in Figure 8. VCC DX RX CX nREXT/CEXT SV00154 Figure 8. Power-down protection circuit |
Similar Part No. - 74LV423N |
|
Similar Description - 74LV423N |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |